Hair dyeing composition comprising an oxidation dye, a scleroglucan gum and a cationic polymer

ABSTRACT

The disclosure relates to a composition for dyeing keratin fibers, in particular human keratin fibers such as hair, comprising one or more oxidation dyes, one or more scleroglucan gums in a total weight content greater than or equal to 0.5% relative to the total weight of the composition, and one or more cationic polymers. The disclosure also relates to a method for dyeing keratin fibers using said composition and to a multi-compartment device suitable for implementing said composition.

CROSS REFERENCE TO RELATED APPLICATION

This is a national stage application of PCT/EP2019/066368, filedinternationally on Jun. 20, 2019, which claims priority to FrenchApplication No. 1855433, filed on Jun. 20, 2018, both of which areincorporated by reference herein in their entireties.

The present invention relates to the field of dyeing keratin fibers andmore particularly to the field of hair dyeing.

Among the methods for dyeing human keratin fibers, such as the hair,mention may be made of oxidation dyeing or permanent dyeing. Moreparticularly, this form of dyeing uses one or more oxidation dyes,usually one or more oxidation bases optionally combined with one or morecouplers.

In general, oxidation bases are chosen from ortho- orpara-phenylenediamines, ortho- or para-aminophenols and heterocycliccompounds. These oxidation bases are colorless or weakly coloredcompounds which, when combined with oxidizing products, can give accessto colored species.

The shades obtained with these oxidation bases are quite often varied bycombining them with one or more couplers, these couplers being notablychosen from aromatic meta-diamines, meta-aminophenols, meta-diphenolsand certain heterocyclic compounds such as indole compounds.

The variety of molecules used as oxidation bases and couplers allows awide range of colors to be obtained.

Oxidation dyeing processes thus consist in using with these dyecompositions a composition comprising at least one oxidizing agent,generally hydrogen peroxide, under alkaline pH conditions in the vastmajority of cases. The role of this oxidizing agent is to reveal thecoloring, via an oxidative condensation reaction between the oxidationdyes.

Oxidation dyeing must moreover satisfy a certain number of requirements.Thus, it must be free of toxicological drawbacks, it must enable shadesto be obtained in the desired intensity and it must show a good wearproperty in the face of external attacking factors such as light, badweather, washing, permanent waving, perspiration and rubbing.

The dyeing process must also make it possible to cover gray hair and,finally, must be as unselective as possible, i.e. it must produce thesmallest possible color differences along the same keratin fiber, whichgenerally includes areas that are differently sensitized (i.e. damaged)from its end to its root, so as to obtain the most uniform possiblecoloring of the keratin fibers. Dye compositions must also give goodcosmetic properties to keratin fibers, in particular care, softnessand/or hold, and must have good working qualities, in particular theymust be easy to apply, while at the same time achieving visible (i.e.notably intense, chromatic), uniform and fast coloring results.

The compositions used in a dyeing process must also have good mixing andapplication properties on keratin fibers, and notably good rheologicalproperties so as not to run down the face, onto the scalp or beyond theareas that it is proposed to dye, when they are applied; this notablyallows uniform application from the roots to the ends.

The composition according to the invention also shows very goodstability over time for several weeks.

In particular, it is sought to obtain dye compositions that are stableover time for several weeks. For the purposes of the present invention,the term “stable” in particular means that physical properties such asthe appearance, the pH and/or the viscosity vary little or not at allover time, and in particular that the viscosity of the composition doesnot change or changes little during storage and/or that the compositiondoes not undergo phase separation during storage.

Specifically, it is desirable for the dye compositions to be stable overtime, in particular stable after 1 month at 45° C., or even after 2months at 45° C.

It is also sought to obtain dye compositions that are stable over a widepH range and in particular with respect to extreme pH values, forexample to alkaline pH values ranging from 9 to 12. Finally, the dyecompositions may occasionally be destabilized (undergo phase separation)by high contents of certain compounds, for instance oxidation dyesand/or cationic compounds and in particular cationic polymers, and it isthus desirable for these compositions to be stable under theseconditions, in particular for them not to undergo phase separation.

These aims and others are achieved by the present invention, one subjectof which is thus a composition (A) for dyeing keratin fibers, preferablyhuman keratin fibers such as the hair, comprising:

-   -   one or more oxidation dyes;    -   one or more scleroglucan gums in a total content of greater than        or equal to 0.5% by weight relative to the total weight of the        composition;    -   one or more cationic polymers.

Another subject of the invention relates to a ready-to-use compositionfor dyeing keratin fibers, in particular human keratin fibers such asthe hair, obtained after mixing a composition (A) comprising:

-   -   one or more oxidation dyes;    -   one or more scleroglucan gums in a total content of greater than        or equal to 0.5% by weight relative to the total weight of the        composition;    -   one or more cationic polymers;    -   and a composition (B) comprising one or more chemical oxidizing        agents.

For the purposes of the invention, the term “ready-to-use composition”refers to any composition that is intended to be applied immediately tokeratin fibers.

The invention is also directed toward a process for dyeing keratinfibers, and in particular human keratin fibers such as the hair,involving the application to the fibers of a dye composition (A) asdefined previously, and of an oxidizing composition (B) comprising atleast one chemical oxidizing agent, preferably chosen from hydrogenperoxide and/or one or more systems for generating hydrogen peroxide,preferably from hydrogen peroxide, the oxidizing composition (B) beingmixed with the dye composition just before use (application to saidfibers) (extemporaneously) or at the time of use, or alternatively thedye composition and oxidizing composition being applied sequentiallywithout intermediate rinsing.

A subject of the invention is also a multi-compartment device (or “kit”)for implementing the composition for dyeing keratin fibers, preferablycomprising at least two compartments, a first compartment containing thedye composition (A) as defined previously, and the second compartmentcontaining at least one oxidizing composition (B) comprising at leastone chemical oxidizing agent, preferably chosen from hydrogen peroxideand/or one or more systems for generating hydrogen peroxide, preferablyfrom hydrogen peroxide, the compositions in the compartments beingintended to be mixed before application, to give the formulation aftermixing; in particular, the kit may be an aerosol device.

For the purposes of the present invention, the term “composition fordyeing” or “dye composition” means a composition intended to be appliedto keratin fibers, preferably human keratin fibers and in particular thehair, optionally after mixing with an oxidizing composition comprisingat least one chemical oxidizing agent. For the purposes of the presentinvention, the term “ready-to-use dye composition” or “ready-to-usecomposition” means a composition resulting from mixing a dye compositionand an oxidizing composition. The ready-to-use dye composition may beprepared just before application to said keratin fibers.

The compositions according to the invention can thus give very gooddyeing performance on keratin fibers, notably in terms of build-up,intensity, chromaticity and/or selectivity. They also affordcompositions which have good rheological properties so as not to rundown onto the face, the scalp or beyond the areas that it is proposed todye, when they are applied.

The compositions according to the invention are stable. For the purposesof the present invention, the term “stable” in particular means thatphysical properties such as the appearance, the pH and/or the viscosityvary little or not at all over time, and in particular that theviscosity of the composition does not change or changes little duringstorage and/or that the composition does not undergo phase separationduring storage. In particular, it is desirable for the dye compositionsto be stable over time, in particular stable after 1 month at 45° C., oreven after 2 months at 45° C.

Furthermore, the compositions according to the invention have theadvantage of being stable (of not undergoing phase separation)independently of the pH and in particular with respect to extreme pHvalues (for example alkaline pH values ranging from 9 to 12). Finally,the compositions are preferably stable (do not undergo phase separation)even in the presence of a high content of certain compounds, forinstance oxidation dyes and/or cationic compounds, such as cationicpolymers, for instance in the presence of more than 0.5% by weight.

Moreover, the compositions of the invention are advantageouslytranslucent, which gives them a visual appearance that the consumerfinds esthetic and attractive, and can contribute in terms of fibersoftness and care qualities and also in terms of ease of straighteningand manageability.

Other features and advantages of the invention will emerge more clearlyon reading the description and the examples that follow.

In the text hereinbelow, unless otherwise indicated, the limits of arange of values are included in that range, notably in the expressions“between” and “ranging from . . . to . . . ”.

The keratin fibers are preferably human keratin fibers, preferably thehair.

The expression “at least one” is equivalent to the expression “one ormore”.

Advantageously, the composition according to the invention has athickened texture, and is in cream or gel form, preferably in gel form,and is preferably translucent.

Thus, the composition according to the invention generally has, at roomtemperature, a viscosity of greater than 50 cps, preferably between 200and 100 000 cps, more preferentially between 500 and 50 000 cps, evenmore preferentially between 800 and 10 000 cps, and better still from1000 to 8000 cps measured at 25° C. at a spin speed of 200 rpm using arheometer such as a Rheomat RM 180 equipped with a No. 3 or 4 spindle,the measurement preferably being taken after 60 seconds of rotation ofthe spindle (after which time stabilization of the viscosity and of thespin speed of the spindle is observed).

Oxidation Dyes

The composition according to the invention comprises one or moreoxidation dyes.

The oxidation dye precursors that may be used in the present inventionare generally chosen from oxidation bases, optionally combined with oneor more couplers.

The oxidation bases may preferably be chosen frompara-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols,ortho-aminophenols and heterocyclic bases, and the addition saltsthereof.

Preferentially, the oxidation base(s) of the invention are chosen frompara-phenylenediamines and heterocyclic bases. Among thepara-phenylenediamines, examples that may be mentioned includepara-phenylenediamine, para-tolylenediamine,2-chloro-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine,2,6-dimethyl-para-phenylenediamine, 2,6-diethyl-para-phenylenediamine,2,5-dimethyl-para-phenylenediamine, N,N-dimethyl-para-phenylenediamine,N,N-diethyl-para-phenylenediamine, N,N-dipropyl-para-phenylenediamine,4-amino-N,N-diethyl-3-methyl aniline,N,N-bis(β-hydroxyethyl)-para-phenylenediamine,4-N,N-bis(β-hydroxyethyl)amino-2-methyl aniline, 4-N,Nbis(β-hydroxyethyl)amino-2-chloroaniline,2-β-hydroxyethyl-para-phenylenediamine, 2-fluoro-para-phenylenediamine,2-isopropyl-para-phenylenediamine,N-(β-hydroxypropyl)-para-phenylenediamine,2-hydroxymethyl-para-phenylenediamine,2-methoxymethyl-para-phenylenediamine,N,N-dimethyl-3-methyl-para-phenylenediamine,N-ethyl-N-(β-hydroxyethyl)-para-phenylenediamine,N-(β,γ-dihydroxypropyl)-para-phenylenediamine,N-(4′-aminophenyl)-para-phenylenediamine,N-phenyl-para-phenylenediamine,2-β-hydroxyethyloxy-para-phenylenediamine,2-β-acetylaminoethyloxy-para-phenylenediamine,N-(β-methoxyethyl)-para-phenylenediamine, 4-aminophenylpyrrolidine,2-thienyl-para-phenylenediamine, 2-β-hydroxyethylamino-5-aminotolueneand 3-hydroxy-1-(4′-aminophenyl)pyrrolidine, and the addition saltsthereof with an acid.

Among the para-phenylenediamines mentioned above, para-phenylenediamine,para-tolylenediamine, 2-isopropyl-para-phenylenediamine,2-(3-hydroxyethyl-para-phenylenediamine, 2-β-hydroxy ethyloxy-para-phenylenediamine, 2,6-dimethyl-para-phenylenediamine,2,6-diethyl-para-phenylenediamine, 2,3-dimethyl-para-phenylenediamine,N,N-bis(β-hydroxyethyl)-para-phenylenediamine,2-chloro-para-phenylenediamine,2-β-acetylaminoethyloxy-para-phenylenediamine and2-methoxymethyl-para-phenylenediamine, and the addition salts thereofwith an acid, are particularly preferred.

Among the bis(phenyl)alkylenediamines, examples that may be mentionedinclude N,N′-bis(β-hydroxyethyl)-N,N′-bis(4′-aminophenyl)-1,3-diaminopropanol,N,N′-bis(β-hydroxyethyl)-N,N′-bis(4′-aminophenyl)ethylenediamine,N,N′-bis(4-aminophenyl)tetramethylenediamine,N,N′-bis(β-hydroxyethyl)-N,N′-bis(4-aminophenyl)tetramethylenediamine,N,N′-bis(4-methylaminophenyl)tetramethylenediamine,N,N′-bis(ethyl)-N,N′-bis(4′-amino-3′-methylphenyl)ethylenediamine and1,8-bis(2,5-diaminophenoxy)-3,6-dioxaoctane, and the addition saltsthereof.

Among the para-aminophenols, examples that may be mentioned includepara-aminophenol, 4-amino-3-methylphenol, 4-amino-3-fluorophenol,4-amino-3-chlorophenol, 4-amino-3-hydroxymethylphenol,4-amino-2-methylphenol, 4-amino-2-hydroxymethylphenol,4-amino-2-methoxymethylphenol, 4-amino-2-aminomethylphenol,4-amino-2-(β-hydroxyethylaminomethyl)phenol and 4-amino-2-fluorophenol,and the addition salts thereof with an acid.

Among the ortho-aminophenols, examples that may be mentioned include2-aminophenol, 2-amino-5-methylphenol, 2-amino-6-methylphenol,5-acetamido-2-aminophenol and the addition salts thereof.

Among the heterocyclic bases, mention may be made in particular ofpyridine derivatives, pyrimidine derivatives and pyrazole derivatives.

Among the pyridine derivatives that may be mentioned are the compoundsdescribed, for example, in patents GB 1 026 978 and GB 1 153 196, forinstance 2,5-diaminopyridine, 2-(4-methoxy phenyl)amino3-aminopyridineand 3,4-diaminopyridine, and the addition salts thereof.

Other pyridine oxidation bases that are useful in the present inventionare the 3-aminopyrazolo[1,5-a]pyridine oxidation bases or addition saltsthereof described, for example, in patent application FR 2 801 308.

Examples that may be mentioned include pyrazolo[1,5-a]pyrid-3-ylamine,2-acetylaminopyrazolo[1,5-a]pyrid-3-ylamine,2-(morpholin-4-yl)pyrazolo[1,5-a]pyrid-3-ylamine,3-aminopyrazolo[1,5-a]pyridine-2-carboxylic acid,2-methoxypyrazolo[1,5-a]pyrid-3-ylamine,(3-aminopyrazolo[1,5-a]pyrid-7-yl)methanol,2-(3-aminopyrazolo[1,5-a]pyrid-5-yl)ethanol,2-(3-aminopyrazolo[1,5-a]pyrid-7-yl)ethanol,(3-aminopyrazolo[1,5-a]pyrid-2-yl)methanol,3,6-diaminopyrazolo[1,5-a]pyridine, 3,4-diaminopyrazolo[1,5-a]pyridine,pyrazolo[1,5-a]pyridine-3,7-diamine,7-(morpholin-4-yl)pyrazolo[1,5-a]pyrid-3-ylamine,pyrazolo[1,5-a]pyridine-3,5-diamine,5-(morpholin-4-yl)pyrazolo[1,5-a]pyrid-3-ylamine,2-[(3-aminopyrazolo[1,5-a]pyrid-5-yl)(2-hydroxyethyl)amino]ethanol,2-[(3-aminopyrazolo[1,5-a]pyrid-7-yl)(2-hydroxyethyl)amino]ethanol,3-aminopyrazolo[1,5-a]pyridin-5-ol, 3-aminopyrazolo[1,5-a]pyridin-4-ol,3-aminopyrazolo[1,5-a]pyridin-6-ol, 3-aminopyrazolo[1,5-a]pyridin-7-ol,2-β-hydroxyethoxy-3-aminopyrazolo[1,5-a]pyridine and2-(4-dimethylpiperazinium-1-yl)-3-aminopyrazolo[1,5-a]pyridine, and alsothe addition salts thereof.

More particularly, the oxidation bases according to the invention arechosen from 3-aminopyrazolo[1,5-a]pyridines preferably substituted inposition 2 with:

a) a (di)(C₁-C₆)(alkyl)amino group, the alkyl groups possibly beingsubstituted with one or more hydroxyl, amino or imidazolium groups;

b) a cationic or non-cationic 5- to 7-membered heterocycloalkyl groupcomprising from 1 to 3 heteroatoms, optionally substituted with one ormore (C₁-C₆)alkyl groups such as di(C₁-C₄)alkylpiperazinium;

c) a (C₁-C₆)alkoxy group optionally substituted with one or morehydroxyl groups, such as β-hydroxyalkoxy, and also the addition saltsthereof.

Among the pyrimidine derivatives, mention may be made of the compoundsdescribed, for example, in patents DE 2359399, JP 88169571, JP 05-63124and EP 0 770 375 or patent application WO 96/15765, such as2,4,5,6-tetraaminopyrimidine, 4-hydroxy-2,5,6-triaminopyrimidine,2-hydroxy-4,5,6-triaminopyrimidine, 2,4-dihydroxy-5,6-diaminopyrimidine,2,5,6-triaminopyrimidine and the addition salts thereof, and thetautomeric forms thereof, when a tautomeric equilibrium exists.

Among the pyrazole derivatives mention may be made of the compoundsdescribed in patents DE 3843892 and DE 4133957 and patent applicationsWO 94/08969, WO 94/08970, FR-A-2 733 749 and DE 195 43 988, for instance4,5-diamino-1-methylpyrazole, 4,5-diamino-1-(β3-hydroxyethyl)pyrazole,3,4-diaminopyrazole, 4,5-diamino-1-(4′-chlorobenzyl)pyrazole,4,5-diamino-1,3-dimethylpyrazole, 4,5-diamino-3-methyl-1-phenylpyrazole,4,5-diamino-1-methyl-3-phenylpyrazole,4-amino-1,3-dimethyl-5-hydrazinopyrazole,1-benzyl-4,5-diamino-3-methylpyrazole,4,5-diamino-3-tert-butyl-1-methylpyrazole,4,5-diamino-1-tert-butyl-3-methylpyrazole,4,5-diamino-1-(β-hydroxyethyl)-3-methylpyrazole,4,5-diamino-1-ethyl-3-methylpyrazole,4,5-diamino-1-ethyl-3-(4′-methoxyphenyl)pyrazole,4,5-diamino-1-ethyl-3-hydroxymethylpyrazole,4,5-diamino-3-hydroxymethyl-1-methylpyrazole,4,5-diamino-3-hydroxymethyl-1-isopropylpyrazole,4,5-diamino-3-methyl-1-isopropylpyrazole,4-amino-5-(2′-aminoethyl)amino-1,3-dimethylpyrazole,3,4,5-triaminopyrazole, 1-methyl-3,4,5-tri aminopyrazole,3,5-diamino-1-methyl-4-methylaminopyrazole and3,5-diamino-4-(β-hydroxyethyl)amino-1-methylpyrazole, and the additionsalts thereof. Preferably, the heterocyclic oxidation bases of theinvention are chosen from 4,5-diaminopyrazoles such as4,5-diamino-1-β3-hydroxyethyl)pyrazole. Use may also be made of4,5-diamino-1-W-methoxyethyl)pyrazole.

Use will preferably be made of a 4,5-diaminopyrazole and even morepreferentially of 4,5-diamino-1-(β-hydroxyethyl)pyrazole and/or a saltthereof.

Pyrazole derivatives that may also be mentioned includediamino-N,N-dihydropyrazolopyrazolones and notably those described inpatent application FR-A-2 886 136, such as the following compounds andthe addition salts thereof:2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one,2-amino-3-ethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one,2-amino-3-isopropylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one,2-amino-3-(pyrrolidin-1-yl)-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one,4,5-diamino-1,2-dimethyl-1,2-dihydropyrazol-3-one,4,5-diamino-1,2-diethyl-1,2-dihydropyrazol-3-one,4,5-diamino-1,2-bis(2-hydroxyethyl)-1,2-dihydropyrazol-3-one,2-amino-3-(2-hydroxyethyl)amino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one,2-amino-3-dimethylamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one,2,3-diamino-5,6,7,8-tetrahydro-1H,6H-pyridazino[1,2-a]pyrazol-1-one,4-amino-1,2-diethyl-5-(pyrrolidin-1-yl)-1,2-dihydropyrazol-3-one,4-amino-5-(3-dimethylaminopyrrolidin-1-yl)-1,2-diethyl-1,2-dihydropyrazol-3-one,2,3-diamino-6-hydroxy-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one.

Use will preferably be made of2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and/or a saltthereof.

As heterocyclic bases, use will preferentially be made of4,5-diamino-1-(β-hydroxyethyl)pyrazole and/or2,3-diamino-6,7-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-one and/or a saltthereof.

The oxidation base(s) used in the context of the invention are generallypresent in an amount ranging from 0.001% to 10% by weight approximately,and preferably ranging from 0.005% to 5%, relative to the total weightof the dye composition.

The additional couplers that are conventionally used for the dyeing ofkeratin fibers are preferably chosen from meta-phenylenediamines,meta-aminophenols, meta-diphenols, naphthalene-based couplers andheterocyclic couplers, and also the addition salts thereof.

Examples that may be mentioned include 1,3-dihydroxybenzene,1,3-dihydroxy-2-methylbenzene, 4-chloro-1,3-dihydroxybenzene,1-hydroxy-3-aminobenzene, 2-methyl-5-aminophenol,3-amino-2-chloro-6-methylphenol, 2-methyl-5-hydroxy ethylaminophenol,2,4-diamino-1-(β-hydroxyethyloxy)benzene, 2-amino-4-(β-hydroxyethylamino)-1-methoxybenzene, 1,3-diaminobenzene,1,3-bis(2,4-diaminophenoxy)propane, 3-ureidoaniline,3-ureido-1-dimethylaminobenzene, sesamol, thymol,1-ß-hydroxyethylamino-3,4-methylenedioxybenzene, α-naphthol,2-methyl-1-naphthol, 6-hydroxyindole, 4-hydroxyindole,4-hydroxy-N-methylindole, 2-amino-3-hydroxypyridine,6-hydroxybenzomorpholine, 3,5-diamino-2,6-dimethoxypyridine,1-N-(β-hydroxyethyl)amino-3,4-methylenedioxybenzene,2,6-bis(β-hydroxyethylamino)toluene, 6-hydroxyindoline,2,6-dihydroxy-4-methylpyridine, 1-H-3-methylpyrazol-5-one,1-phenyl-3-methylpyrazol-5-one,2,6-dimethylpyrazolo[1,5-b]-1,2,4-triazole,2,6-dimethyl[3,2-c]-1,2,4-triazole and6-methylpyrazolo[1,5-a]benzimidazole, the addition salts thereof with anacid, and mixtures thereof.

According to one embodiment, the composition comprises at least oneoxidation base and at least one coupler.

In general, the addition salts of the oxidation bases and couplers thatmay be used in the context of the invention are notably chosen from theaddition salts with an acid, such as hydrochlorides, hydrobromides,sulfates, citrates, succinates, tartrates, lactates, tosylates,benzenesulfonates, phosphates and acetates.

In the context of the present invention, when they are present, thecoupler(s) are generally present in a total amount ranging from 0.001%to 10% by weight approximately of the total weight of the dyecomposition, and preferably ranging from 0.005% to 5% by weight relativeto the total weight of the dye composition.

Preferably, the total content of oxidation dyes in the compositionaccording to the invention is between 0.001% and 20% by weight,preferably between 0.001% and 10% by weight, preferably between 0.01%and 5% by weight, relative to the weight of the composition.

Scleroglucan Gums

According to the invention, composition (A) comprises one or morescleroglucan gums in a total content of greater than or equal to 0.5% byweight relative to the weight of the composition.

Scleroglucan gums are polysaccharides of microbial origin produced by afungus of Sclerotium type, in particular Sclerotium rolfsii. They arepolysaccharides constituted solely of glucose units.

Scleroglucan gums may or may not be modified. Preferably, thescleroglucan gums used in the present invention are unmodified.

Examples of scleroglucan gums that may be used in the present inventionare, in a nonlimiting manner, the products sold under the name ActigumCS, in particular Actigum CS 11 by the company Sanofi Bio Industries andunder the name Amigum or Amigel by the company Alban MüllerInternational.

Other scleroglucan gums, such as the gum treated with glyoxal describedin French patent application No. 2 633 940, may also be used.

The scleroglucan gum(s) that may be used according to the inventionpreferably represent from 0.5% to 10% by weight, more preferentiallyfrom 0.5% to 5% by weight, even more preferentially from 0.5% to 3% byweight, better still from 0.5% to 2% by weight and even morepreferentially from 0.7% to 1.5% by weight relative to the total weightof composition (A).

According to one embodiment of the invention, the oxidizing composition(B) comprises one or more scleroglucan gums, preferably in a totalcontent of greater than or equal to 0.5% by weight relative to theweight of the composition.

Preferably, according to this embodiment, the scleroglucan gum(s) thatmay be used according to the invention preferably represent from 0.5% to10% by weight, more preferentially from 0.5% to 5% by weight, even morepreferentially from 0.5% to 3% by weight, even more preferentially andeven more preferentially from 0.5% to 2% by weight or even from 0.7% to2% by weight relative to the total weight of the oxidizing composition(B).

Cationic Polymers

The composition according to the invention comprises one or morecationic polymers.

For the purposes of the present invention, the term “cationic polymer”denotes any polymer containing cationic groups and/or groups that can beionized into cationic groups.

The cationic polymers that may be present in the composition accordingto the invention may be chosen from any of those already known per se asimproving the cosmetic properties of the hair, i.e. notably thosedescribed in patent application EP-A-337 354 and in French patents FR-2270 846, 2 383 660, 2 598 611, 2 470 596 and 2 519 863.

The cationic polymers that are preferred are chosen from thosecontaining units including primary, secondary, tertiary and/orquaternary amine groups, which may either form part of the main polymerchain or be borne by a side substituent directly attached thereto.

The cationic polymers used generally have a number-average molecularmass of between 500 and 5×10⁶ approximately and preferably between 10³and 3×10⁶ approximately.

Among the cationic polymers that may be mentioned more particularly arepolymers of the polyamine, polyaminoamide and polyquaternary ammoniumtype.

These are known products. They are notably described in French patents 2505 348 and 2 542 997.

Preferably, the cationic polymer(s) according to the invention are notassociative; in particular, they do not contain any fatty chainsincluding from 8 to 30 carbon atoms.

Preferably, the cationic polymer(s) are chosen from:

(1) Homopolymers or copolymers derived from acrylic or methacrylicesters or amides and including at least one of the units of formula (I),(II), (III) or (IV) below:

in which:

R3, which may be identical or different, denote a hydrogen atom or a CH3radical;

A, which may be identical or different, represent a linear or branchedalkyl group of 1 to 6 carbon atoms, preferably 2 or 3 carbon atoms, or ahydroxyalkyl group of 1 to 4 carbon atoms;

R4, R5 and R6, which may be identical or different, represent an alkylgroup containing from 1 to 18 carbon atoms or a benzyl radical andpreferably an alkyl group containing from 1 to 6 carbon atoms;

R1 and R2, which may be identical or different, represent hydrogen or analkyl group containing from 1 to 6 carbon atoms, and preferably methylor ethyl;

X denotes an anion derived from a mineral or organic acid, such as amethosulfate anion or a halide such as chloride or bromide.

Mention may be made in particular of the ethyltrimethylammoniummethacrylate chloride homopolymer.

The polymers of family (1) can also contain one or more units derivedfrom comonomers which may be chosen from the family of acrylamides,methacrylamides, diacetone acrylamides, acrylamides and methacrylamidessubstituted on the nitrogen with lower (C1-C4) alkyls, acrylic ormethacrylic acids or esters thereof, vinyllactams such asvinylpyrrolidone or vinylcaprolactam, and vinyl esters.

Preferably, the polymers of family (1) are chosen from:

-   -   copolymers of acrylamide and of dimethylaminoethyl methacrylate        quaternized with dimethyl sulfate or with a dimethyl halide,        such as the product sold under the name Hercofloc by the company        Hercules,    -   copolymers of acrylamide and of        methacryloyloxyethyltrimethylammonium chloride, described, for        example, in patent application EP-A-080 976 and sold under the        name Bina Quat P 100 by the company Ciba Geigy,    -   the copolymer of acrylamide and of        methacryloyloxyethyltrimethylammonium methosulfate sold under        the name Reten by the company Hercules,    -   quaternized or non-quaternized        vinylpyrrolidone/dialkylaminoalkyl acrylate or methacrylate        copolymers, such as the products sold under the name Gafquat by        the company ISP, for instance Gafquat 734 or Gafquat 755, or        alternatively the products known as Copolymer 845, 958 and 937.        These polymers are described in detail in French patents 2 077        143 and 2 393 573,    -   dimethylamino ethyl        methacrylate/vinylcaprolactam/vinylpyrrolidone terpolymers, such        as the product sold under the name Gaffix VC 713 by the company        ISP,    -   vinylpyrrolidone/methacrylamidopropyldimethylamine copolymers        sold in particular under the name Styleze CC 10 by ISP,    -   quaternized vinylpyrrolidone/dimethylaminopropylmethacrylamide        copolymers such as the product sold under the name Gafquat HS        100 by the company ISP,    -   crosslinked polymers of methacryloyl oxy        (C1-C4)alkyltri(C1-C4)alkylammonium salts, such as the polymers        obtained by homopolymerization of dimethylaminoethyl        methacrylate quaternized with methyl chloride, or by        copolymerization of acrylamide with dimethylaminoethyl        methacrylate quaternized with methyl chloride, the        homopolymerization or copolymerization being followed by        crosslinking with an olefinically unsaturated compound, more        particularly methylenebisacrylamide. Use may more particularly        be made of a crosslinked        acrylamide/methacryloyloxyethyltrimethylammonium chloride        copolymer (20/80 by weight) in the form of a dispersion        containing 50% by weight of said copolymer in mineral oil. This        dispersion is sold under the name Salcare® SC 92 by the company        Ciba. Use may also be made of a crosslinked homopolymer of        methacryloyloxyethyltrimethylammonium chloride comprising        approximately 50% by weight of the homopolymer in mineral oil or        in a liquid ester. These dispersions are sold under the names        Salcare® SC 95 and Salcare® SC 96 by the company Ciba.

(2) The cellulose ether derivatives including quaternary ammoniumgroups, described in French patent 1 492 597, and in particular thepolymers sold under the names “Ucare Polymer JR” (JR 400 LT, JR 125 andJR 30M) or “LR” (LR 400 or LR 30M) by the company Amerchol. Thesepolymers are also defined in the CTFA dictionary as quaternary ammoniumsof hydroxyethylcellulose that have reacted with an epoxide substitutedwith a trimethylammonium group.

(3) Copolymers of cellulose or cellulose derivatives grafted with awater-soluble quaternary ammonium monomer, notably described in U.S.Pat. No. 4,131,576, such as hydroxyalkylcelluloses, for instancehydroxymethyl-, hydroxyethyl- or hydroxypropylcelluloses notably graftedwith a methacryloylethyltrimethylammonium,methacrylamidopropyltrimethylammonium or dimethyldiallylammonium salt.

The commercial products corresponding to this definition are moreparticularly the products sold under the names Celquat L 200 and CelquatH 100 by the company National Starch.

(4) The cationic guar gums described more particularly in U.S. Pat. Nos.3,589,578 and 4,031,307, such as guar gums containing cationictrialkylammonium groups. Guar gums modified with a salt (e.g. chloride)of 2,3-epoxypropyltrimethylammonium are used, for example.

Such products are notably sold under the trade names Jaguar C13 S,Jaguar C 15, Jaguar C 17 and Jaguar C162 by the company Rhodia.

(5) Polymers formed from piperazinyl units and divalent alkylene orhydroxyalkylene radicals containing straight or branched chains,optionally interrupted with oxygen, sulfur or nitrogen atoms or witharomatic or heterocyclic rings, and also the oxidation and/orquaternization products of these polymers. Such polymers are described,in particular, in French patents 2 162 025 and 2 280 361.

(6) Water-soluble polyaminoamides prepared in particular bypolycondensation of an acidic compound with a polyamine; thesepolyaminoamides can be crosslinked with an epihalohydrin, a diepoxide, adianhydride, an unsaturated dianhydride, a bis-unsaturated derivative, abis-halohydrin, a bis-azetidinium, a bis-haloacyldiamine, a bis-alkylhalide or alternatively with an oligomer resulting from the reaction ofa difunctional compound which is reactive with a bis-halohydrin, abis-azetidinium, a bis-haloacyldiamine, a bis-alkyl halide, anepihalohydrin, a diepoxide or a bis-unsaturated derivative; thecrosslinking agent being used in proportions ranging from 0.025 to 0.35mol per amine group of the polyaminoamide; these polyaminoamides can bealkylated or, if they include one or more tertiary amine functions, theycan be quaternized. Such polymers are notably described in Frenchpatents 2 252 840 and 2 368 508.

(7) Polyaminoamide derivatives resulting from the condensation ofpolyalkylene polyamines with polycarboxylic acids followed by alkylationwith difunctional agents. Mention may be made, for example, of adipicacid/dialkylaminohydroxyalkyldialkylenetriamine polymers in which thealkyl radical includes from 1 to 4 carbon atoms and preferably denotesmethyl, ethyl or propyl. Such polymers are notably described in Frenchpatent 1 583 363.

Among these derivatives, mention may be made more particularly of theadipic acid/dimethylaminohydroxypropyl/diethylenetriamine polymers soldunder the name Cartaretine F, F4 or F8 by the company Sandoz.

(8) Polymers obtained by reacting a polyalkylene polyamine including twoprimary amine groups and at least one secondary amine group with adicarboxylic acid chosen from diglycolic acid and saturated aliphaticdicarboxylic acids containing from 3 to 8 carbon atoms. The mole ratiobetween the polyalkylenepolyamine and the dicarboxylic acid is between0.8:1 and 1.4:1; the polyaminoamide resulting therefrom is reacted withepichlorohydrin in a mole ratio of epichlorohydrin relative to thesecondary amine group of the polyaminoamide of between 0.5:1 and 1.8:1.Such polymers are notably described in U.S. Pat. Nos. 3,227,615 and2,961,347.

Polymers of this type are sold in particular under the name Hercosett 57by the company Hercules Inc. or else under the name PD 170 or Delsette101 by the company Hercules in the case of the adipicacid/epoxypropyl/diethylenetriamine copolymer.

(9) Cyclopolymers of alkyldiallylamine or of dialkyldiallylammonium,such as the homopolymers or copolymers including, as main constituent ofthe chain, units corresponding to formula (V) or (VI):

in which formulae k and t are equal to 0 or 1, the sum k+t being equalto 1; R9 denotes a hydrogen atom or a methyl radical; R7 and R8,independently of each other, denote an alkyl group containing from 1 to6 carbon atoms, a hydroxyalkyl group in which the alkyl group preferablycontains 1 to 5 carbon atoms, or a lower (C1-C4) amidoalkyl group, or R7and R8 may denote, together with the nitrogen atom to which they areattached, heterocyclic groups, such as piperidyl or morpholinyl; R7 andR8, independently of each other, preferably denote an alkyl groupcontaining from 1 to 4 carbon atoms; Y⁻ is an anion such as bromide,chloride, acetate, borate, citrate, tartrate, bisulfate, bisulfate,sulfate or phosphate. These polymers are in particular described inFrench patent 2 080 759 and in its Certificate of Addition 2 190 406.

Among the polymers defined above, mention may be made more particularlyof the dimethyldiallylammonium chloride homopolymer sold under the nameMerquat 100 by the company Nalco (and its homologs of low weight-averagemolecular mass), the INCI name of which is Polyquaternium-6, and thecopolymers of diallyldimethylammonium chloride and of acrylamide soldunder the names Merquat 550 and Merquat 7SPR, the INCI name of which isPolyquaternium-7. Mention may also be made of the copolymers ofdiallyldimethylammonium chloride and of (meth)acrylic acid known underthe INCI name Polyquaternium-22.

(10) The quaternary diammonium polymer containing repeating unitscorresponding to formula (XV):

in which formula (XV):

R10, R11, R12 and R13, which may be identical or different, representaliphatic, alicyclic or arylaliphatic radicals containing from 1 to 6carbon atoms or lower hydroxyalkylaliphatic radicals, or alternativelyR10, R11, R12 and R13, together or separately, constitute, with thenitrogen atoms to which they are attached, heterocycles optionallycontaining a second heteroatom other than nitrogen, or alternativelyR10, R11, R12 and R13 represent a linear or branched C1-C6 alkyl radicalsubstituted with a nitrile, ester, acyl or amide group or a groupCOOR14D or CONHR14D where R14 is an alkylene and D is a quaternaryammonium group;

A1 and B1 represent polymethylene groups containing from 2 to 8 carbonatoms, which may be linear or branched and saturated or unsaturated andmay contain, bonded to or intercalated in the main chain, one or morearomatic rings, or one or more oxygen or sulfur atoms, or sulfoxide,sulfone, disulfide, amino, alkylamino, hydroxyl, quaternary ammonium,ureido, amide or ester groups, and

X⁻ denotes an anion derived from a mineral or organic acid;

A1, R10 and R12 can form, with the two nitrogen atoms to which they areattached, a piperazine ring; in addition, if A1 denotes a linear orbranched, saturated or unsaturated alkylene or hydroxyalkylene radical,B1 can also denote a group —(CH2)n-CO-D-OC—(CH2)n- in which D denotes:

a) a glycol residue of formula: —O—Z—O—, where Z denotes a linear orbranched hydrocarbon-based radical or a group corresponding to one ofthe following formulae:—(CH2-CH2-O)x—CH2-CH2-—[CH2-CH(CH3)—O]y—CH2-CH(CH3)—

in which x and y denote an integer from 1 to 4, representing a definedand unique degree of polymerization or any number from 1 to 4representing an average degree of polymerization;

b) a bis-secondary diamine residue, such as a piperazine derivative;

c) a bis-primary diamine residue of formula: —NH—Y—NH—, where Y denotesa linear or branched hydrocarbon-based radical, or else the divalentradical—CH2-CH2-S—S—CH2-CH2-;

d) a ureylene group of formula: —NH—CO—NH—.

Preferably, X⁻ is an anion, such as chloride or bromide.

These polymers have a number-average molecular mass generally between1000 and 100 000.

Polymers of this type are notably described in French patents 2 320 330,2 270 846, 2 316 271, 2 336 434 and 2 413 907 and U.S. Pat. Nos.2,273,780, 2,375,853, 2,388,614, 2,454,547, 3,206,462, 2,261,002,2,271,378, 3,874,870, 4,001,432, 3,929,990, 3,966,904, 4,005,193,4,025,617, 4,025,627, 4,025,653, 4,026,945 and 4,027,020.

It is more particularly possible to use polymers that are constituted ofrepeating units corresponding to formula (XVI) below:

in which R10, R11, R12 and R13, which may be identical or different,denote an alkyl or hydroxyalkyl radical containing from 1 to 4 carbonatoms approximately, n and p are integers ranging from 2 to 8approximately, and X— is an anion derived from a mineral or organicacid. Mention may be made in particular of Mexomere PO sold by thecompany Chimex (hexadimethrine chloride).

(11) Polyquaternary ammonium polymers formed from repeating units offormula (IX):

in which p denotes an integer ranging from 1 to 6 approximately, D maybe nothing or may represent a group —(CH2)r-CO— in which r denotes anumber equal to 4 or 7, and X— is an anion.

Such polymers may be prepared according to the processes described inU.S. Pat. Nos. 4,157,388, 4,702,906 and 4,719,282. They are notablydescribed in patent application EP-A-122 324.

Among these polymers, examples that may be mentioned include theproducts Mirapol A 15, Mirapol AD1, Mirapol AZ1 and Mirapol 175 sold bythe company Miranol.

(12) Quaternary polymers of vinylpyrrolidone and of vinylimidazole, forinstance the products sold under the names Luviquat FC 905, FC 550 andFC 370 by the company BASF. These polymers may also comprise othermonomers, such as diallyldialkylammonium halides. Mention may be made inparticular of the product sold under the name Luviquat Sensation by thecompany BASF.

(13) Polyamines such as Polyquart H sold by Henkel, which is referencedunder the name Polyethylene Glycol (15) Tallow Polyamine in the CTFAdictionary, or oxyethylenated (15 OE) coconut kernel polyamines

(14) and mixtures thereof.

Other cationic polymers that may be used in the context of the inventionare polyalkyleneimines, in particular polyethyleneimines, polymerscontaining vinylpyridine or vinylpyridinium units, condensates ofpolyamines and of epichlorohydrin, polyquaternary ureylenes and chitinderivatives.

Preferably, as cationic polymers that may be used in the context of thepresent invention, the polymers of families (1), (9) and (10) andmixtures thereof are preferred.

Even more preferably, the cationic polymer(s) are chosen from families(9) and/or (10), preferably mixtures thereof.

Preferably, the copolymers of family (1) are chosen from copolymerscomprising a monomer of family (1) also containing one or more unitsderived from comonomers that may be chosen from the family ofacrylamides, methacrylamides, diacetone acrylamides, acrylamides andmethacrylamides substituted on the nitrogen with lower (C1-C4) alkylgroups, groups derived from acrylic or methacrylic acids or estersthereof, vinyllactams such as vinylpyrrolidone or vinylcaprolactam, andvinyl esters.

Particularly preferably, according to this embodiment, they are chosenfrom quaternized or non-quaternized vinylpyrrolidone/dialkylaminoalkylacrylate or methacrylate copolymers, preferably such as the productswhose INCI name is Polyquaternium-11, and/or whose INCI name isVP/dimethylaminoethyl methacrylate copolymer, preferably the compoundwhose INCI name is Polyquaternium-11.

Preferably, the polymers of family (9) are chosen fromdialkyldiallylammonium homopolymers, preferably from thedimethyldiallylammonium halide (in particular chloride) homopolymersnotably sold under the name Merquat 100 by the company Nalco (andhomologs thereof of low weight-average molecular masses), the INCI nameof which is Polyquaternium-6, and the of diallyldimethylammonium halide(in particular chloride) and of acrylamide notably sold under the nameMerquat 550, the INCI name of which is Polyquaternium-7.

Preferably, the polymers of family (10) are chosen from the polymers offamily (10) formed from repeating units corresponding to the formula:

in which R1, R2, R3 and R4, which may be identical or different, denotean alkyl or hydroxyalkyl radical containing from 1 to 4 carbon atoms, nand p are integers ranging from 2 to 20, and X− is an anion derived froma mineral or organic acid;

preferably the polymers bearing the repeating units of formulae (W) and(U) below:

and notably those whose molecular weight, determined by gel permeationchromatography, is between 9500 and 9900;

and notably those whose molecular weight, determined by gel permeationchromatography, is about 1200;

preferably the polymer composed of units of formula (IV) for which R1,R2, R3 and R4 represent a methyl radical, n=3, p=6 and X═Cl, known ashexadimethrine chloride.

Preferably, the cationic polymer(s) are chosen from quaternized ornon-quaternized vinylpyrrolidone/dialkylaminoalkyl acrylate ormethacrylate copolymers, preferably such as the products whose INCI nameis Polyquaternium 11, hexadimethrine chloride anddimethyldiallylammonium halide homopolymers or copolymers(Polyquaternium-6 and Polyquaternium-7).

In a preferred variant of the invention, the composition comprises oneor more polymers chosen from dimethyldiallylammonium halide homopolymersor copolymers (Polyquaternium-6 and Polyquaternium-7) and hexadimethrinechloride.

Preferably, the total content of cationic polymer(s) in composition (A)according to the invention ranges from 0.1% to 12% by weight relative tothe total weight of the composition, preferably from 0.1% to 10% byweight and more preferentially from 0.4% to 7% by weight relative to thetotal weight of the composition, preferably from 0.5% to 6% by weight.

Carboxylic Acids

The dye composition (A) according to the invention may advantageouslycomprise one or more carboxylic acids, and/or addition salts thereofand/or solvates thereof, said carboxylic acid(s) being aliphaticcompounds, comprising from 2 to 10 carbon atoms and preferablycomprising at least two carboxylic groups.

Preferably, they are chosen from aliphatic dicarboxylic and/ortricarboxylic acids comprising from 2 to 10 carbon atoms, preferablyfrom 2 to 8 carbon atoms, better still from 2 to 6 carbon atoms.

In particular, the carboxylic acid(s) are saturated or unsaturated, andsubstituted or unsubstituted.

Preferably, the carboxylic acids may be chosen from oxalic acid, malonicacid, malic acid, glutaric acid, citraconic acid, citric acid, maleicacid, succinic acid, adipic acid, tartaric acid, fumaric acid, andmixtures thereof.

Preferably, the carboxylic acid(s) comprise at least two carboxylicgroups and are chosen from malonic acid, citric acid, maleic acid,glutaric acid, succinic acid, and mixtures thereof; preferably chosenfrom malonic acid, citric acid, maleic acid, and mixtures thereof.

More particularly preferably, the carboxylic acid is citric acid.

The total content of carboxylic acid(s) and/or addition salts thereofand/or solvates thereof preferably ranges from 0.1% to 20% by weight,relative to the total weight of composition (A).

Preferably, the total content of carboxylic acid(s) ranges from 0.1% to20%, preferentially from 0.5% to 10% by weight, better still from 1% to7% by weight, relative to the total weight of the composition, and evenbetter still from 2% to 5% by weight relative to the total weight ofcomposition (A).

Alkaline Agents

According to a preferred embodiment, the composition according to theinvention comprises one or more alkaline agents. The alkaline agents(also known as basifying agents) may be mineral, organic and/or hybrid.

According to a first advantageous embodiment of the invention, thealkaline agent(s) are chosen from mineral alkaline agents, preferablychosen from aqueous ammonia, also known as ammonium hydroxide (orammonia precursors such as ammonium salts, for example ammonium halidesand in particular ammonium chloride), alkali metal or alkaline-earthmetal silicates, phosphates, carbonates or bicarbonates, such as alkalimetal or alkaline-earth metal metasilicates, sodium or potassiumcarbonate or bicarbonate, sodium or potassium hydroxide, or mixturesthereof.

Preferably according to this embodiment, the alkaline agents are chosenfrom aqueous ammonia (or ammonia precursors such as ammonium salts, forexample ammonium halides and in particular ammonium chloride) and/oralkali metal or alkaline-earth metal metasilicates.

According to a preferred embodiment, the alkaline agent(s) are chosenfrom alkanolamines and/or amino acids.

According to a first preferred embodiment, the alkaline agent(s) arechosen from alkanolamines.

The term “alkanolamine” means an organic amine comprising a primary,secondary or tertiary amine function, and one or more linear or branchedC₁ to C₈ alkyl groups bearing one or more hydroxyl radicals.

Organic amines chosen from alkanolamines such as monoalkanolamines,dialkanolamines or trialkanolamines comprising one to three identical ordifferent C₁ to C₄ hydroxyalkyl radicals are in particular suitable forperforming the invention.

The compounds of this type are preferably chosen from monoethanolamine(MEA), diethanolamine, triethanolamine, monoisopropanolamine,diisopropanolamine, N,N-dimethylethanolamine,2-amino-2-methyl-1-propanol, triisopropanolamine,2-amino-2-methyl-1,3-propanediol, 3-amino-1,2-propanediol,3-dimethylamino-1,2-propanediol and tris(hydroxymethyl)aminomethane, andmixtures thereof, preferably monoethanolamine (MEA).

According to a second preferred embodiment, the alkaline agent(s) arechosen from amino acids.

As amino acids that may be used in the composition according to thepresent invention, mention may notably be made of aspartic acid,glutamic acid, alanine, arginine, ornithine, citrulline, asparagine,carnitine, cysteine, glutamine, glycine, histidine, lysine, isoleucine,leucine, methionine, N-phenylalanine, proline, serine, taurine,threonine, tryptophan, tyrosine and valine.

Advantageously, the amino acids are chosen from basic amino acids,notably comprising an additional amine function optionally included in aring or in a ureido function.

Examples that may be mentioned include histidine, lysine, arginine,ornithine and citrulline.

The organic amine may also be chosen from organic amines of heterocyclictype. Besides histidine that has already been mentioned in the aminoacids, mention may in particular be made of pyridine, piperidine,imidazole, triazole, tetrazole and benzimidazole.

Preferably, the alkaline agent(s) present in the composition accordingto the invention are chosen from aqueous ammonia, alkanolamines and/oramino acids in neutral or ionic form, in particular basic amino acidssuch as arginine, and alkali metal or alkaline-earth metalmetasilicates.

Preferably, the composition according to the invention comprises one ormore alkaline agents.

According to an advantageous embodiment of the invention, thecomposition according to the invention comprises:

one or more mineral alkaline agents, preferably chosen from aqueousammonia and/or alkali metal or alkaline-earth metal metasilicates,preferably aqueous ammonia; and

one or more organic alkaline agents, preferably chosen fromalkanolamines and/or amino acids, preferably from alkanolamines,preferably monoethanolamine.

The composition according to the invention preferably comprises one ormore alkaline agents; it preferably comprises one or more mineralalkaline agents and one or more organic alkaline agents chosen fromalkanolamines.

When the composition comprises aqueous ammonia (ammonium hydroxide), itscontent preferably ranges from 0.1% to 10% by weight, morepreferentially from 0.5% to 8% by weight and better still from 1% to 6%by weight, relative to the total weight of the composition.

When the composition comprises one or more alkanolamines, their contentpreferably ranges from 0.5% to 10% by weight, more preferentially from1% to 9% by weight and better still from 2% to 8% by weight relative tothe total weight of the composition.

Preferably, the composition according to the invention comprises one ormore alkaline agents, and they are present in a total content rangingfrom 1% to 20% by weight, more preferentially from 3% to 18% by weightand better still from 5% to 16% by weight relative to the total weightof the composition.

Associative Polymers

The composition according to the invention may also comprise one or moreassociative polymers other than the cationic polymers describedpreviously.

Said associative polymers may be chosen from nonionic, anionic andamphoteric associative polymers, preferably from nonionic associativepolymers. The associative polymers according to the invention arepolymers comprising at least one C₈-C₃₀ fatty chain and of which themolecules are capable, in the formulation medium, of associating witheach other or with molecules of other compounds.

Preferably, the fatty chain includes from 10 to 30 carbon atoms.

A particular case of associative polymers is amphiphilic polymers, i.e.polymers including one or more hydrophilic parts which make themwater-soluble and one or more hydrophobic zones (comprising at least onefatty chain) via which the polymers interact and assemble with eachother or with other molecules.

The associative polymers that may be used in the composition accordingto the invention are preferably chosen from nonionic associativepolymers.

According to a preferred embodiment of the invention, the associativepolymer(s) are chosen from:

(1) celluloses modified with groups including at least one

fatty chain;

preferably from:

hydroxyethylcelluloses modified with groups including at least one fattychain, such as alkyl, arylalkyl or alkylaryl groups, or mixturesthereof, and in which the alkyl groups are preferably C₈ to C₂₂,preferably such as the cetylhydroxyethylcellulose sold notably under thereference Natrosol Plus Grade 330 CS (C₁₆ alkyls) sold by the companyAshland, or the product Polysurf 67CS sold by the company Ashland,

hydroxyethylcelluloses modified with polyalkylene glycol ether alkylphenol groups, such as the product Amercell Polymer HM-1500(polyethylene glycol (15) ether of nonyl phenol) sold by the companyAmerchol,

and mixtures thereof.

(2) hydroxypropyl guars modified with groups including at least onefatty chain, such as the product Esaflor HM 22 (C₂₂ alkyl chain) sold bythe company Lamberti, and the products RE210-18 (C₁₄ alkyl chain) andRE205-1 (C₂₀ alkyl chain) sold by the company Rhodia.

Particularly preferably, the associative polymer(s) are nonionic, andpreferably chosen from celluloses modified with groups including atleast one fatty chain. Preferably, the nonionic associative polymer(s)are chosen from hydroxyethylcelluloses modified with groups including atleast one fatty chain, such as alkyl, aralkyl, alkylaryl groups, ormixtures thereof, and in which the alkyl groups are preferably C₈-C₂₂,and hydroxyethylcelluloses modified with polyalkylene glycol alkylphenyl ether groups, and mixtures thereof, preferablycetylhydroxyethylcellulose.

When they are present, the associative polymer(s), preferably nonionicassociative polymers, are present in the composition in a total weightcontent preferably between 0.01% and 10%, even more preferentiallybetween 0.05% and 5% of the total weight of the composition, betterstill between 0.1% and 2% by weight relative to the total weight of thecomposition.

Surfactants

Preferably, the composition according to the present invention alsocomprises one or more surfactants, which may be chosen from anionicsurfactants, amphoteric or zwitterionic surfactants, nonionicsurfactants and cationic surfactants, and mixtures thereof, preferablyfrom nonionic surfactants, cationic surfactants, and mixtures thereof.

The term “anionic surfactant” means a surfactant including, as ionic orionizable groups, only anionic groups. These anionic groups arepreferably chosen from the following groups: CO₂H, CO₂ ⁻, SO₃H, SO₃ ⁻,OSO₃H, OSO₃ ⁻, H₂PO₃, HPO₃ ⁻, PO₃ ²⁻, H₂PO₂, HPO₂ ⁻, PO₂ ²⁻, POH andPO⁻.

According to a preferred embodiment, the composition according to theinvention comprises one or more nonionic surfactants.

The nonionic surfactants that may be used according to the invention maybe chosen from:

-   -   alcohols, α-diols and (C₁₋₂₀)alkylphenols, these compounds being        polyethoxylated and/or polypropoxylated and/or polyglycerolated,        the number of ethylene oxide and/or propylene oxide groups        possibly ranging from 1 to 100, and the number of glycerol        groups possibly ranging from 2 to 30; or else these compounds        comprising at least one fatty chain including from 8 to 40        carbon atoms and notably from 16 to 30 carbon atoms; in        particular, oxyethylenated alcohols comprising at least one        saturated or unsaturated, linear or branched C₈ to C₄₀ alkyl        chain, comprising from 1 to 100 mol of ethylene oxide,        preferably from 2 to 50 and more particularly from 2 to 40 mol        of ethylene oxide and including one or two fatty chains;    -   condensates of ethylene oxide and propylene oxide with fatty        alcohols;    -   polyethoxylated fatty amides preferably containing from 2 to 30        ethylene oxide units, polyglycerolated fatty amides including on        average from 1 to 5 and in particular from 1.5 to 4 glycerol        groups;    -   ethoxylated fatty acid esters of sorbitan, preferably containing        from 2 to 40 ethylene oxide units;    -   fatty acid esters of sucrose;    -   polyoxyalkylenated, preferably polyoxyethylenated, fatty acid        esters containing from 2 to 150 mol of ethylene oxide, including        oxyethylenated plant oils;    -   N—(C₆-C₂₄ alkyl)glucamine derivatives;    -   amine oxides such as (C₁₀-C₁₄ alkyl)amine oxides or N—(C₁₀-C₁₄        acyl)aminopropylmorpholine oxides;    -   and mixtures thereof.

Among the commercial products, mention may be made of the products soldby the company Cognis under the names Plantaren® (600 CS/U, 1200 and2000) or Plantacare® (818, 1200 and 2000); the products sold by thecompany SEPPIC under the names Oramix CG 110 and Oramix® NS 10; theproducts sold by the company BASF under the name Lutensol GD 70, or theproducts sold by the company Chem Y under the name AG10 LK.

Preferably, use is made of C₈/C₁₆-alkyl (poly)glycosides 1,4, notably asan aqueous 53% solution, such as those sold by Cognis under thereference Plantacare® 818 UP.

Preferentially, the nonionic surfactants are chosen from:

-   -   saturated or unsaturated, linear or branched, oxyethylenated        fatty alcohols including at least one C₈ to C₄₀, notably C₈-C₂₀        and better still C₁₀-C₁₈ alkyl chain, and comprising from 1 to        100 mol of ethylene oxide, preferably from 2 to 50, more        particularly from 2 to 40 mol, or even from 3 to 20 mol of        ethylene oxide; and    -   (C₆-C₂₄ alkyl)(poly)glycosides, and more particularly (C₈-C₁₈        alkyl)(poly)glycosides;    -   and mixtures thereof;        and even more preferentially from (C₆-C₂₄        alkyl)(poly)glycosides, preferentially (C₈-C₁₈        alkyl)(poly)glycosides.

According to a preferred embodiment of the invention, the compositionaccording to the invention comprises one or more nonionic surfactants,preferably chosen from alkyl(poly)glycosides. Preferably, thecomposition according to the invention comprises one or more surfactantschosen from (C₆-C₂₄ alkyl)(poly)glycosides, more preferentially from(C₈-C₁₈ alkyl)(poly)glycosides, preferably fromC₈/C₁₆-alkyl(poly)glucosides, preferably of 1,4 type, and preferablychosen from decyl glucosides and/or caprylyl/caprylyl glucosides and/orcocoyl glucosides.

According to a first embodiment, the surfactant(s) are nonionic,preferably chosen from (C₆-C₂₄ alkyl)polyglycosides.

According to a preferred embodiment, the composition according to theinvention comprises at least one or more cationic surfactants.Preferably, the surfactant(s) are chosen from optionallypolyoxyalkylenated primary, secondary or tertiary fatty amine salts,quaternary ammonium salts, and mixtures thereof.

Among the quaternary ammonium salts, preference is given, firstly, totetraalkylammonium chlorides, for instance dialkyldimethylammonium oralkyltrimethylammonium chlorides in which the alkyl group includes fromabout 12 to 22 carbon atoms, in particular behenyltrimethylammoniumchloride, distearyldimethylammonium chloride, cetyltrimethylammoniumchloride or benzyldimethylstearylammonium chloride, or, secondly, todistearoylethylhydroxyethylmethylammonium methosulfate,dipalmitoylethylhydroxyethylammonium methosulfate ordistearoylethylhydroxyethylammonium methosulfate, or also, finally, topalmitylamidopropyltrimethylammonium chloride orstearamidopropyldimethyl(myristyl acetate)ammonium chloride, sold underthe name Ceraphyl® 70 by Van Dyk;

-   -   quaternary ammonium salts of imidazoline;    -   diquaternary or triquaternary ammonium salts. Such compounds        are, for example, Finquat CT-P sold by the company Finetex        (Quaternium-89), and Finquat CT sold by the company Finetex        (Quaternium-75);    -   quaternary ammonium salts containing one or more ester        functions, notably diacyloxyethyldimethylammonium,        diacyloxyethylhydroxyethylmethylammonium,        monoacyloxyethyldihydroxyethylmethylammonium,        triacyloxyethylmethylammonium or        monoacyloxyethylhydroxyethyldimethylammonium chloride or methyl        sulfate, and mixtures thereof. The acyl groups preferably        contain 14 to 18 carbon atoms and are derived more particularly        from a plant oil such as palm oil or sunflower oil. When the        compound contains several acyl groups, these groups may be        identical or different.

Such compounds are sold, for example, under the names Dehyquart® by thecompany Henkel, Stepanquat® by the company Stepan, Noxamium® by thecompany CECA or Rewoquat® WE 18 by the company Rewo-Witco.

The composition according to the invention may contain, for example, amixture of quaternary ammonium monoester, diester and triester saltswith a weight majority of diester salts.

Use may also be made of the ammonium salts containing at least one esterfunction that are described in patents U.S. Pat. Nos. 4,874,554 and4,137,180.

Use may also be made of the behenoylhydroxypropyltrimethylammoniumchloride sold, for example, by the company Kao under the name QuartaminBTC 131.

Preferably, the ammonium salts containing at least one ester functioncontain two ester functions.

Preferably, the cationic surfactant(s) are chosen fromcetyltrimethylammonium, behenyltrimethylammonium anddipalmitoylethylhydroxyethylmethylammonium salts, and mixtures thereof,and more particularly behenyltrimethylammonium chloride,cetyltrimethylammonium chloride, anddipalmitoylethylhydroxyethylammonium methosulfate, and mixtures thereof.

The composition preferably comprises one or more cationic surfactants ina total content ranging from 0.01% to 20% by weight, more preferentiallyfrom 0.05% to 10% by weight and better still from 0.1% to 5% by weightrelative to the total weight of the composition.

The composition preferably comprises one or more nonionic surfactants ina total content ranging from 0.01% to 10% by weight, more preferentiallyfrom 0.05% to 5% by weight and better still from 0.1% to 3% by weightrelative to the total weight of the composition.

The composition preferably comprises one or more cationic surfactants ina total content ranging from 0.01% to 10% by weight, more preferentiallyfrom 0.05% to 5% by weight and better still from 0.1% to 3% by weightrelative to the total weight of the composition.

Preferably, the surfactant(s) are chosen from cationic or nonionicsurfactants, and mixtures thereof, preferentially cationic surfactants.Preferably, the composition according to the invention comprises atleast one or more cationic surfactant and one or more nonionicsurfactants.

Medium

The cosmetically acceptable medium that is suitable for dyeing keratinfibers, also known as a dye support, generally comprises water or amixture of water and of at least one organic solvent to dissolve thecompounds that are not sufficiently water-soluble.

More particularly, the organic solvents are chosen from linear orbranched and preferably saturated monoalcohols or diols, comprising 2 to10 carbon atoms, such as ethyl alcohol, isopropyl alcohol, hexyleneglycol (2-methyl-2,4-pentanediol), neopentyl glycol and3-methyl-1,5-pentanediol; glycerol; aromatic alcohols such as benzylalcohol and phenylethyl alcohol; glycols or glycol ethers, for instanceethylene glycol monomethyl, monoethyl and monobutyl ethers, propyleneglycol or ethers thereof, for instance propylene glycol monomethylether, butylene glycol or dipropylene glycol; and also diethylene glycolalkyl ethers, notably of C₁-C₄, for instance diethylene glycol monoethylether or monobutyl ether, alone or as a mixture.

The common solvents described above, if they are present, usuallyrepresent from 1% to 40% by weight and more preferentially from 5% to30% by weight relative to the total weight of the composition.

The compositions used according to the invention generally comprisewater or a mixture of water and of one or more organic solvents or amixture of organic solvents.

The composition according to the invention preferably comprises water.

Preferably, the water content ranges from 5% to 95% by weight, morepreferentially from 10% to 90% by weight and better still from 20% to80% by weight relative to the total weight of the composition.

pH of the Medium

The pH of the composition according to the invention generally rangesfrom 1 to 12. Preferably, the pH of composition (A) according to theinvention is basic.

For the purposes of the present invention, the term “basic pH” means apH above 7.

Preferably, the pH of composition (A) according to the invention isabove 8, and particularly ranges from 8.5 to 12.

Preferably, the pH of the composition is between 9 and 12.

pH Adjuster

The cosmetically acceptable medium may be adjusted to the desired valueby means of acidifying or basifying agents usually used in the dyeing ofkeratin fibers, or alternatively using standard buffer systems.

Among the acidifying agents, examples that may be mentioned includemineral acids, for instance hydrochloric acid, (ortho)phosphoric acid,boric acid, nitric acid or sulfuric acid, or organic acids, for instancecompounds comprising at least one sulfonic acid function, a phosphonicacid function or a phosphoric acid function, or compounds bearing acarboxylic acid function such as those mentioned previously.

Other Additives

The composition according to the invention may also contain variousadditives conventionally used in hair dye compositions, such as mineralthickeners, and in particular fillers such as clays or talc; organicthickeners other than scleroglucan gums; antioxidants; penetrants;sequestrants; fragrances; dispersants; film-forming agents; ceramides;preserving agents; opacifiers; fatty substances and/or additional directdyes.

The above additives are generally present in an amount for each of themof between 0.01% and 40% by weight relative to the weight of thecomposition, and preferably between 0.1% and 20% by weight relative tothe weight of the composition.

Needless to say, a person skilled in the art will take care to selectthis or these additional compound(s) such that the advantageousproperties intrinsically associated with the composition(s) that areuseful in the dyeing process in accordance with the invention are not,or are not substantially, adversely affected by the envisionedaddition(s).

Another subject of the invention is a dyeing process using a dyecomposition (A) as described previously, with an oxidizing composition(B) comprising one or more chemical oxidizing agents.

In particular, the invention is also directed toward a process fordyeing keratin fibers, and in particular human keratin fibers such asthe hair, involving the application to the fibers of a dye composition(A) as defined previously, and of an oxidizing composition (B)comprising at least one chemical oxidizing agent, preferably chosen fromhydrogen peroxide and/or one or more systems for generating hydrogenperoxide, preferably from hydrogen peroxide, the oxidizing composition(B) being mixed with the dye composition (A) just before use(application to said fibers) (extemporaneously) or at the time of use,or alternatively the dye composition and oxidizing composition beingapplied sequentially without intermediate rinsing.

Composition B

Oxidizing Agent:

The oxidizing composition (B) used with the dye composition (A)according to the invention contains one or more chemical oxidizingagents, preferably chosen from hydrogen peroxide and/or one or moresystems for generating hydrogen peroxide.

The term “chemical oxidizing agent” means an oxidizing agent other thanatmospheric oxygen.

Preferably, the chemical oxidizing agent(s) are chosen from hydrogenperoxide, peroxygenated salts, for instance persulfates, perborates,peracids and precursors thereof, percarbonates of alkali metals oralkaline-earth metals, such as sodium carbonate peroxide, also known assodium percarbonate and peracids and precursors thereof; alkali metalbromates or ferricyanides, solid hydrogen peroxide-generating chemicaloxidizing agents such as urea peroxide and polymer complexes that canrelease hydrogen peroxide, notably those comprising a heterocyclic vinylmonomer such as polyvinylpyrrolidone/H₂O₂ complexes, in particular inpowder form; oxidases that produce hydrogen peroxide in the presence ofa suitable substrate (for example glucose in the case of glucose oxidaseor uric acid with uricase).

Preferably, the chemical oxidizing agent(s) are chosen from hydrogenperoxide, urea peroxide, alkali metal bromates or ferricyanides,peroxygenated salts, and mixtures of these compounds.

Particularly preferably, the chemical oxidizing agent is hydrogenperoxide.

Preferably, the chemical oxidizing agent(s) represent from 0.05% to 40%by weight, preferably from 0.5% to 30% by weight, more preferentiallyfrom 1% to 20% by weight and better still from 1.5% to 15% by weightrelative to the total weight of the oxidizing composition (B).

Preferably, the oxidizing composition (B) according to the inventiondoes not contain any peroxygenated salts.

As indicated previously, according to one embodiment of the invention,the oxidizing composition (B) comprises one or more scleroglucan gums,preferably in a total content of greater than or equal to 0.5% by weightrelative to the weight of the composition.

Preferably, according to this embodiment, the scleroglucan gum(s) thatmay be used according to the invention preferably represent from 0.5% to10% by weight, more preferentially from 0.5% to 5% by weight, even morepreferentially from 0.5% to 3% by weight or even from 0.7% to 2% byweight relative to the total weight of the oxidizing composition (B).

The oxidizing composition (B) may also contain various additionalcompounds or adjuvants conventionally used in compositions for dyeingthe hair and as notably defined previously.

The oxidizing composition (B) is generally an aqueous composition. Forthe purposes of the invention, the term “aqueous composition” means acomposition comprising more than 20% by weight of water, preferably morethan 30% by weight of water and even more advantageously more than 40%by weight of water.

Preferably, the oxidizing composition (B) usually comprises water, whichgenerally represents from 10% to 98% by weight, preferably from 20% to96% by weight, preferably from 50% to 95% by weight, relative to thetotal weight of the composition.

This oxidizing composition (B) may also comprise one or morewater-soluble organic solvents as described previously. It may alsocomprise one or more acidifying agents.

Usually, the pH of composition (B) is less than 7.

The pH of composition (B) of the invention is advantageously between 1and 7, preferably between 1 and 4 and more preferentially from 1.5 to3.5.

Finally, the oxidizing composition (B) is in various forms, for instancea solution, an emulsion or a gel.

Dyeing Process

The process of the invention may be performed by applying the dyecomposition (A) as defined previously and the oxidizing composition (B)successively and without intermediate rinsing, the order beingirrelevant. According to a preferred variant, a ready-to-use compositionobtained by extemporaneous mixing, at the time of use, of the dyecomposition (A) as defined previously and of the oxidizing composition(B) is applied to wet or dry keratin fibers. According to thisembodiment, preferably, the weight ratio R of the amounts of (A)/(B)ranges from 0.1 to 10, preferably from 0.2 to 2 and better still from0.3 to 1.

In addition, independently of the variant used, the application of theready-to-use composition to the keratin materials (resulting either fromthe extemporaneous mixing of the dye composition (A) and the oxidizingcomposition (B) or from the partial or total successive applicationthereof) is left in place for a time generally from about 1 minute to 1hour and preferably from 5 minutes to 30 minutes.

The temperature during the process is conventionally between roomtemperature (between 15 and 25° C.) and 80° C. and preferably betweenroom temperature and 60° C.

After the treatment, the keratin materials are optionally rinsed withwater, optionally subjected to washing followed by rinsing with water,and are then dried or left to dry.

Preferably, the keratin fibers are human keratin fibers, preferablyhuman hair.

A subject of the invention is also a ready-to-use composition for dyeingkeratin fibers, in particular human keratin fibers such as the hair,obtained by extemporaneous mixing, at the time of use, of a composition(A) comprising:

-   -   one or more oxidation dyes;    -   one or more scleroglucan gums in a total content of greater than        or equal to 0.5% by weight relative to the total weight of the        composition;    -   one or more cationic polymers;    -   and a composition (B) comprising    -   one or more chemical oxidizing agents.

The term “extemporaneous” notably means less than 30 minutes, preferablyless than 15 minutes before application to the keratin fibers,preferably less than 5 minutes. In particular, the mixture is appliedimmediately after having been prepared.

According to a particular embodiment of the invention, the chemicaloxidizing agent(s) preferably represent a total content ranging from0.1% to 20% by weight, preferably from 0.5% to 15% by weight or evenmore preferentially from 1% to 10% by weight relative to the totalweight of the ready-to-use composition.

Finally, the invention relates to a multi-compartment device comprising,in a first compartment, a dye composition (A) as described previously,and, in a second, an oxidizing composition (B) comprising one or moreoxidizing agents, these compositions having been described previously.

In particular, a subject of the invention is also a multi-compartmentdevice (or “kit”) for implementing the composition for dyeing keratinfibers, preferably comprising at least two compartments, a firstcompartment containing the dye composition (A) as defined previously,and the second compartment containing at least one oxidizing composition(B) comprising at least one chemical oxidizing agent, preferably chosenfrom hydrogen peroxide and/or one or more systems for generatinghydrogen peroxide, preferably hydrogen peroxide, the compositions in thecompartments being intended to be mixed before application, to give theformulation after mixing; in particular, the kit may be an aerosoldevice.

The examples that follow serve to illustrate the invention without,however, being limiting in nature.

In particular, the dyeing of the keratin fibers obtained in theseexamples may advantageously be evaluated in the CIE L*a*b* system, usinga Datacolor Spectraflash SF600X spectrocolorimeter.

In this L* a* b* system, the three parameters respectively denote theintensity of the color (L*), the green/red color axis (a*) and theblue/yellow color axis (b*). The higher the value of L*, the lighter thecolor. The higher the value of a*, the redder the color and the higherthe value of b*, the yellower the color.

The variation (or extent) of the dyeing between untreated locks of hairand locks of hair after treatment is defined by the parameter DE* and iscalculated according to the following equation:DE*=√{square root over (V(L*−L _(o)*)²+(a*−a _(o)*)²+(b*−b_(o)*)²)}  (i)

In this equation, the parameters L*, a* and b* represent the valuesmeasured on locks of hair after dyeing and the parameters L₀*, a₀* andb₀* represent the values measured on locks of untreated hair. The higherthe DE* value, the better the dyeing of the keratin fibers.

In the CIE L*, a*, b* system, the chromaticity is calculated accordingto the following equation:C*=√{square root over (a* ² +b* ²)}

The higher the value of C*, the more chromatic the coloring.

EXAMPLE 1

The following compositions were prepared from the following ingredientsin the following proportions indicated in grams of active material:

Comparative Comparative Comparative Composition composition compositioncomposition A1 C1 C2 C3 (according outside the outside the outside theto the invention invention invention invention) Ammonium 2.47 2.47 2.472.47 hydroxide Ethanolamine 4 4 4 4 EDTA 0.2 0.2 0.2 0.2 Sodium sulfite0.5 0.5 0.5 0.5 Oxidation 1.401 1.401 1.401 1.401 dyes Fragance qs qs qsqs Hexa- 0.3 0.3 0.3 0.3 dimethrine chloride Poly- 0.4 0.4 0.4 0.4quaternium-6 Cetylhydroxy- 0.2 0.2 0.2 0.2 ethylcellulose Xanthan gum 1Algin 1 Sclerotium 1 gum Hydroxy- 1 propyl cellulose Water qs 100 qs 100qs 100 qs 100 Glycerol 10 10 10 10 Cetrimonium 0.25 0.25 0.25 0.25chloride Caprylyl/ 0.6 0.6 0.6 0.6 capryl glucoside Ascorbic acid 0.40.4 0.4 0.4

Visual Evaluation of the Stability of the Compositions

The stability of the dye compositions was evaluated by observing thecompositions at T0 (immediately after preparation of the composition)and then after 2 months of storage at 45° C.

Composition Composition Composition Composition C1 C2 C3 A1 ObservationLiquid Liquid Liquid Translucent at T0 at texture texture texture gelroom Non- Non- Non- Homo- temperature homo- homo- homo- geneous (25° C.)geneous geneous geneous (no phase (phase (phase (phase separation)separation) separation) separation) After 2 Liquid Liquid LiquidTranslucent months at texture texture texture gel 45° C. Non- Non- Non-Homo- homo- homo- homo- geneous geneous geneous geneous (no phase (phase(phase (phase separation) separation) separation) separation)

It is observed that composition A1 according to the invention ishomogeneous and forms a translucent gel at T0. After 2 months at 45°,composition A1 according to the invention is stable; it is homogeneousand translucent. Comparative compositions C1, C2 and C3 in which thescleroglucan gum was replaced weight-for-weight with another thickenerof polysaccharide type are unstable. Specifically, they are liquid andare not homogeneous; phase separation of these compositions is observedas early as T0.

Example 2

The following composition was prepared from the following ingredients inthe following proportions indicated in grams:

Composition A2 according to the invention Ammonium hydroxide 1.23Arginine 3 Ethanolamine 5 EDTA 0.2 Sodium sulfite 0.5 Citric acid 3.3Sodium metasilicate 2 Toluene-2,5-diamine 0.16 4-Amino-2-hydroxytoluene0.92 5-Amino-6-chloro-o-cresol 0.2 1-Hydroxyethyl 4,5-diaminopyrazole1.44 sulfate p-Aminophenol 0.12 Fragance qs Polyquaternium-11 1.84Hexadimethrine chloride 1.2 Polyquaternium-6 0.8Cetylhydroxyethylcellulose 0.2 Sclerotium gum 1 Water qs 100 Glycerol 10Cetrimonium chloride 0.25 Caprylyl/capryl glucoside 0.6 Ascorbic acid0.4

Visual Evaluation of the Stability of the Composition

The stability of the dye composition was evaluated by observing it at T0and then after 48 hours at room temperature (25° C.) and then after 2months of storage at 45° C.

Composition A2 Observation at T0 (immediately Translucent gel afterpreparation) at room Homogeneous (no phase temperature (25° C.)separation) After 2 months at 45° C. Translucent gel Homogeneous (nophase separation)

It is observed that composition A2 according to the invention ishomogeneous and forms a translucent gel at T0. After 2 months at 45°,composition A2 according to the invention is stable and in gel form; itis homogeneous and translucent.

Composition A2 of the example was mixed with 1 times its weight of20-volumes oxidizing agent (6 g % of H2O2 AM); the mixture thus obtainedwas applied to locks of natural hair containing 90% white hairs, NW.

The “mixture/lock” bath ratio is, respectively, 10/1 (g/g).

The leave-on time is 30 minutes, on a hotplate set at 27° C. Onconclusion of the leave-on time, the locks are rinsed and then driedunder a drying hood at 40° C.

The color of the locks was evaluated in the CIE L* a* b* system, using aDatacolor Spectraflash SF600X spectrocolorimeter.

Intense coloring of the keratin fibers is obtained (L*=24.95).

The invention claimed is:
 1. A composition for dyeing keratin fibers,comprising: at least one oxidation dye; at least one scleroglucan gum ina total amount of greater than or equal to 0.5% by weight, relative tothe total weight of the composition; and at least one cationic polymer.2. The composition of claim 1, wherein the at least one scleroglucan gumis present in an amount ranging from 0.5% to 10% by weight, relative tothe total weight of the composition.
 3. The composition of claim 1,wherein the at least one oxidation dye is chosen from benzene-basedoxidation bases; wherein the at least one oxidation dye is optionallycombined with at least one coupler chosen from meta-phenylenediamines,meta-aminophenols, meta-diphenols, naphthalene-based couplers,heterocyclic couplers, or salts thereof.
 4. The composition of claim 1,wherein the at least one oxidation dye is chosen frompara-phenylenediamines, bis(phenyl)alkylenediamines, para-aminophenols,ortho-aminophenols, heterocyclic bases, or salts thereof.
 5. Thecomposition of claim 1, wherein the at least one cationic polymer ispresent in a total amount ranging from 0.1% to 12% by weight, relativeto the total weight of the composition.
 6. The composition of claim 1,wherein the at least one cationic polymer is chosen from compounds ofthe following families (1), (9), or (10): (1) homopolymers or copolymersderived from acrylic or methacrylic esters or amides, and including atleast one of the units of formula (I), (II), (III) or (IV) below:

wherein in formulae (I), (II), (III), and (IV): R₃, which may beidentical or different, is a hydrogen atom or a CH₃ radical; A, whichmay be identical or different, is chosen from a linear or branched alkylgroup of 1 to 6 carbon atoms, or a hydroxyalkyl group of 1 to 4 carbonatoms; R₄, R₅, and R₆, which may be identical or different, are chosenfrom an alkyl group containing from 1 to 18 carbon atoms, or a benzylradical; R₁ and R₂, which may be identical or different, are chosen fromhydrogen, or an alkyl group containing from 1 to 6 carbon atoms; Xdenotes an anion derived from a mineral or organic acid; (9)cyclopolymers of alkyldiallylamine or of dialkyldiallylammonium,including, as main constituent of the chain, units corresponding toformula (V) or (VI):

wherein in formulae (V) and (VI), k and t are equal to 0 or 1, the sumk+t being equal to 1; R₉ denotes a hydrogen atom or a methyl radical; R₇and R₈, independently of each other, are chosen from an alkyl groupcontaining from 1 to 6 carbon atoms, a hydroxyalkyl group, or a lower(C₁-C₄) amidoalkyl group, or alternatively, R₇ and R₈ denote, togetherwith the nitrogen atom to which they are attached, heterocyclic groups;Y⁻is an anion chosen from bromide, chloride, acetate, borate, citrate,tartrate, bisulfate, bisulfite, sulfate, or phosphate; (10) quaternarydiammonium polymers containing repeating units corresponding to formula(XV):

wherein in formula (XV): R₁₀, R₁₁, R₁₂, and R₁₃, which may be identicalor different, are chosen from aliphatic, alicyclic, or arylaliphaticradicals containing from 1 to 6 carbon atoms, or lowerhydroxyalkylaliphatic radicals, or alternatively, R₁₀, R₁₁, R₁₂, andR₁₃, together or separately, constitute, with the nitrogen atoms towhich they are attached, heterocycles optionally containing a secondheteroatom other than nitrogen, or alternatively, R₁₀, R₁₁, R₁₂, and R₁₃are chosen from a linear or branched C₁-C₆ alkyl radical substitutedwith a nitrile, ester, acyl, or amide group, a group COOR₁₄D, or a groupCONHR₁₄D, wherein R₁₄ is an alkylene and D is a quaternary ammoniumgroup; A1 and B1 are chosen from polymethylene groups containing from 2to 8 carbon atoms, which may be linear or branched, and saturated orunsaturated, and contain, bonded to, or intercalated in the main chain,at least one aromatic ring, an oxygen atom, a sulfur atom, a sulfoxidegroup, a sulfone group, a disulfide group, an amino group, an alkylaminogroup, a hydroxyl group, a quaternary ammonium group, an ureido group,an amide group, or an ester group; and X⁻denotes an anion derived from amineral or organic acid; wherein A1, R₁₀, and R₁₂ can form, with the twonitrogen atoms to which they are attached, a piperazine ring.
 7. Thecomposition of claim 6, wherein the at least one cationic polymer chosenfrom compounds of family (1) is chosen from quaternized ornon-quaternized vinylpyrrolidone/dialkylaminoalkyl acrylate ormethacrylate copolymers.
 8. The composition of claim 6, wherein the atleast one cationic polymer chosen from compounds of family (9) or (10)is chosen from: dialkyldiallylammonium homopolymers; and cationicpolymers formed from repeating units corresponding to the formula (IV′):

wherein R₁, R₂, R₃, and R₄, which may be identical or different, denotean alkyl or hydroxyalkyl radical containing from 1 to 4 carbon atoms, nand p are integers ranging from 2 to 20, and X− is an anion derived froma mineral or organic acid.
 9. The composition of claim 1, furthercomprising at least one carboxylic acid chosen from malonic acid, citricacid, maleic acid, or mixtures thereof.
 10. The composition of claim 9,wherein the at least one carboxylic acid is present in an amount rangingfrom 1% to 10% by weight, relative to the total weight of thecomposition.
 11. The composition of claim 1, further comprising at leastone alkaline agent, wherein int at least one alkaline agent is presentin a total amount ranging from 1% to 20% by weight, relative to thetotal weight of the composition.
 12. The composition of claim 11,wherein the at least one alkaline agent is chosen from mineral ororganic agents.
 13. The composition of claim 11, wherein the at leastone alkaline agent is chosen from aqueous ammonia, alkali metal oralkaline-earth metal metasilicates, alkanolamines, amino acids, ormixtures thereof.
 14. The composition of claim 13, wherein the at leastone alkaline agent comprises aqueous ammonia (ammonium hydroxide) and atleast one alkanolamine.
 15. The composition of claim 1, furthercomprising at least one nonionic surfactant chosen from: saturated orunsaturated, linear or branched, oxyethylenated fatty alcohols includingat least one C₈ to C₄₀, and comprising from 1 to 100 mol of ethyleneoxide; alkylpolyglycosides; or mixtures thereof.
 16. The composition ofclaim 15, wherein the at least one nonionic associative polymer ischosen from celluloses modified with groups including at least one fattychain.
 17. The composition of claim 1, further comprising at least onechemical oxidizing agent.
 18. The composition of claim 17, wherein theat least one chemical oxidizing agent is chosen from hydrogen peroxide,or at least one system generating hydrogen peroxide.
 19. A method fordyeing keratin fibers, comprising applying to the keratin fibers a dyecomposition (A) and an oxidizing composition (B), wherein: the dyecomposition (A) comprises: at least one oxidation dye; at least onescleroglucan gum in a total amount of greater than or equal to 0.5% byweight, relative to the total weight of the dye composition (A); and atleast one cationic polymer; the oxidizing composition (B) comprises atleast one chemical oxidizing agent; and the oxidizing composition (B) isextemporaneously mixed with the dye composition (A) just before beingapplied to the keratin fibers, or alternatively, the dye composition (A)and the oxidizing composition (B) are applied sequentially to thekeratin fibers without intermediate rinsing.
 20. A multi-compartment kitcomprising: a first compartment containing a dye composition comprising:at least one oxidation dye; at least one scleroglucan gum in a totalamount of greater than or equal to 0.5% by weight, relative to the totalweight of the dye composition; and at least one cationic polymer; and asecond compartment containing an oxidizing composition comprising atleast one chemical oxidizing agent.